Merge pull request i6mi6#98 from ejkkan/feature/scrollevent-callback

Feature/scrollevent callback

Author: i6mi6

README.md

@@ -115,6 +115,7 @@ The `ParallaxScrollView` component adds a few additional properties, as describe
 | `stickyHeaderHeight` | `number` | If `renderStickyHeader` is used | If `renderStickyHeader` is set, then its height must be specified. |
 | `contentContainerStyle` | `object` | No | These styles will be applied to the scroll view content container which wraps all of the child views. (same as for [ScrollView](https://facebook.github.io/react-native/docs/scrollview.html#contentcontainerstyle)) |
 | `outputScaleValue` | `number` | No | The value for the scale interpolation output value, default `5` |
+| `scrollEvent` | `func` | No | Callback to recieve the animated scroll event values |
 
 
 ## Latest changes

src/index.js

@@ -178,7 +178,7 @@ class ParallaxScrollView extends Component {
 			onChangeHeaderVisibility,
 			onScroll: prevOnScroll = e => {}
 		} = this.props
-
+		this.props.scrollEvent && this.props.scrollEvent(e)
 		const p = pivotPoint(parallaxHeaderHeight, stickyHeaderHeight)
 
 		// This optimization wont run, since we update the animation value directly in onScroll event